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The Olympic record for the marathon is 2.00 h, 9.00 min, 21.0 s. If the average speed of a runner achieving this record is 5.436 m/s, what is the marathon distance?

Respuesta :

Marathon distance is 42.19 km

Explanation:

The Olympic record for the marathon = 2.00 h, 9.00 min, 21.0 s

The Olympic record for the marathon = 2 x 60 x 60 + 9 x 60 + 21 = 7761 s

Average speed of a runner achieving this record = 5.436 m/s

Marathon distance = Time for running x Average speed

Marathon distance = 7761 x 5.436

Marathon distance = 42188.8 m

Marathon distance = 42.19 km

Marathon distance is 42.19 km